/Engine/Source/Runtime/Engine/Classes/Engine/Canvas.h
Calculate the size of a string built from a font, word wrapped to a specified region.
void WrappedStrLenf ( const [UFont](API\Runtime\Engine\Engine\UFont) * Font, float ScaleX, float ScaleY, int32 & XL, int32 & YL, const TCHAR * Fmt, ... )